Electric heater for carbureters.



A. G. DAM & O. H. KIRBY. ELECTRIC HEATER FOR GARBURETERS. APPLICATION TILED APR. 21, 1911. RENEWED MAR. "r, 1914 E 1,1 15,512. Pat nted Nov. 3. 1914. v

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3 ANDREW o. Dam AND CHARLES n.

To all whomzt may 0072 06m States, residing at New. York, in the county.

pf Ne\v'Yorlr;'-.S Itate of New York, have invent-ed {a-...n6Wr a IId useful Electrical Heater for carburetersfof which the following is eetfieation. v 'Fliis'finve'ntion relatesv to carbureters and more particularly to means whereby theex- .ipl'osive mixture can be properly heated, the

:object of the invention being means-for heating by electricity, either or "both theair' andhydro-carbon prior to the admission thereof to the 'carbureter or any hydro-carbon mixing device or whilewithin and subsequent to leaving said carbu'i'et'eior any hydro-carbonmixing-device. I

' Another object isto provide an electrical heater which is simple in; construction and compact.

\Vith the foregoing and other objects in view which will appear as the description proceeds the invention resides in the combination and arrangement of parts and. in the details of construction. hereinafter described and claimed it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of,.what is claimed without de parting from the spirit of the invention.

In the accompanying drawings, the preferred form of the invention has been shown.

In said drawings .Figure 1 is an elevation of a carbureter and its feed mechanism and connections with the present improvements applied thereto andshown with parts broken away. Fig. 2 is a section through a carbureter having the present improvements arranged therein. Fig. 3 is an enlarged section through a portion of the heater. Fig. 4 is a view partly in section and partly in elevation of the fuel intake pipe and showing the heater located therein.

7 Referring to the figures .by characters of reference 1 designates a carbureter having a fuel intake pipe 2 eXtending therefrom type has been shown, the same being provided with a heater arranged therein. This 105 to the engine, not shown, and provided in addition, with an air intake pipe 3. The casing of the" fioat feed has been indicated at 4 and has liquid fuel pipe 5 extending therefrom and tern'iinating in a nozzle 6 for direct-ing hydro-carbon into the carbureting chamber. A feed pipe 7 opens into the cas- V Specification of Letters Patent. Lflled Apri121, 1911,,seria1 in. 622,520., Renewed March to provide KIRIBY, on NEW YORK, 1v. sen) KIR-BY assrenonearn DAM.

4 ELECTRIC nnarnn ron'canzeunnrnns.

- Patented Nov. 3, 1914.

7, 1914. Serial No. 823,243.

ing 4 and serves-to .directhydro-carbon to the casing from a suitable tank. not shown.

The parts hereinbefore described are all of a well known type.

The fuel intake pipe 2 may be surrounded by a heating'coil 8, said coil being housed within a jacket 9 on which the binding posts 10 are secured. Th'ecasing of the carburetlng chamber may also be surrounded by a heating coil 11 housed within a. jacket li. The casing 4c of the float chamber is shown surrounded by a heatingcoil 13 and additional coils have been shown upon the pipe 1, the pipe 5 andthe air intake pipe 3 these co1ls .being indicated at 14, 15 and 16 respectlvely. Jackets 17, 18 and 19 are employed for housing said'coils and protectng them from injury and preventing obects irom coming'into contact therewith. An air heating coil 20 may be, supported across the inlet end of the, pipe '3, this coil being spaced from the pipe so as to permitv the hydro-carbon will be initially heated within pipe 7 before entering the float chamber casing 45 and it will again be heated within this casing and within the pipe 5 prior to being discharged from nozzle 6.

.Air admitted to the carbureting chamber will be heated by thecoil 20 and by the heated pipe 3. The 'hot air and hydro-carbon-will be thoroughly mixed in the usual manner within the chamber 1 and will be subsequently heated by the coil 8 on the fuel intake pipe 2. It will be obvious, of course, that, it desired, any one'of these heating coils'may be dispensed with and the hydrocarbon or the air can be heated at any one of the oints mentioned.

By t e term carbureter as used it is intended to include not only the carbureting chamber, but also the float chamber and the various pipe connections disclosed in Fig. 1. In Fig. 2 a carbureter of the Stewart carbureter has an air valve, such as indicated at 21 and which surrounds an aspirating tube 22 extending upwardly from a well 23 inthe lower or stem portion of the valve 21. The float in floatchamber 24., has been indicated at 25 and the air intake has been shown at 26, this intake communicating 'With the'compartment 27 surrounding the upper portion of the valve.

The heater constituting the present improvements is in the form of two concentric circular bands 28 of insulating material and interposed between these bands are concentric coils of conducting material, such as indicated at 29, said coils being spaced by a circular partition plate 30. "Supporting rings 31 or the like may engage the upper edge portions of the parts 28 and and are suspended from eyes 32 or the like projecting from. the upper portion of the Wall of compartment 2-7. The conductors 29 are eX- tended to plugs 33 mounted Within but insulated from the body of the carbureter and these plugs 33 are electrically connected to a suitable source of electrical energy. I

From the foregoing it will be seen that the fluid contents of the carbureter, before leaving the same through the outlet 3-1, will be thoroughly heated by the heater suspended within the compartment 27, the air being i brought into intimate relation with this heater during its circulation through the carbureter.

If preferred, a heater, such as hasbeen illustrated in Figs. 2 and 3, may be placed within the fuel intake pipe 35 connecting the carbureter with the engine, this arrangeing the tube, of a ring-like electric heater. suspended within the mixing chamber and extending around the valve and aspirating tube and spaced therefrom and from the wall of the chamber, the gases in the chamber being free to circulate through and around the heater.

In testimony that We claim the foregoing as our own, We have hereto afilxed our signatures in the presence'of tvvo Witnesses;

ANDREW C. DAM. CHAS. H. KIRBY.

Witnesses:

ANDREW J. DAM, WM. B. MCKENZIE. 

